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The computer is too slow and first thing many friends think about is adding more memory. Yes, there are usually more than two memory slots reserved on motherboard. computer., maybe add a solid state drive to speed up. Today, computer learning editor will teach you how to choose memory that suits you. As long as you can determine purpose of computer, choice is not difficult.

First, let's see how much installed memory to allocate

Currently, capacity and price of latest 8GB DDR4 memory is a very suitable choice for mainstream users, and what's more, it has better performance when upgraded in future. Now, if your funds are limited, you can buy 8GB memory first, and then add another 8GB memory if you want to upgrade later, so that you can form a dual-channel mode. This is very useful when running large programs such as PS.

Dual-channel memory read and write speed:

Single-channel memory read and write speed:

How to create dual channel mode with 3 memories?

If you have a combination of 2/2/4 GB or 4/4/8 GB in your hand, you can form a dual channel, but it must also be supported by motherboard, for example, inserting two 4 GB memory into a single channel slot. Among them, another 8GB memory is inserted into corresponding channel slot, and (4+4)GB and 8GB can also form dual-channel memory. But if there are 3 RAMs of same capacity, then after they are all inserted into memory slots, system will only recognize them as 3 independent RAMs, and will not form a dual-channel architecture.

What memory frequency should I choose?

The DDR4 platform has been mainly popularized in today's market. There are several basic specifications for 2133, 2400, 2666 and some high frequency products. Among them, DDR4 2133 is on verge of elimination, and price is therefore recommended by editor that you at least Starting with DDR4 2400, eighth generation Core and first generation Ryzen support DDR4 2666 and DDR4 2933, so these two frequencies are also best choice. and the price difference is not big.

When it comes to Ryzen 2nd Gen, Ryzen APUs, or overclocking that doesn't reveal stock memory clocks, it's recommended that you max out at DDR4 3200. If this is a laptop, then it is much easier to upgrade memory, it is safest to buy according to parameters.

How to choose memory voltage?

The normal voltage of DDR4 frequency memory is typically 1.2V, but many high frequency memory modules are actually used for overclocking using a higher voltage of about 1.35V. If motherboard cannot correctly identify high frequency memory, use default 1 .2 V. If voltage is low, system may be very unstable, and if memory is used for a long time with excessively high voltage, it will seriously affect life of memory. Therefore, before installing memory, especially high-frequency memory, it is necessary to pay attention to identification of parameter on memory, and confirm it in BIOS settings.

DDR4L memory has also appeared in some of laptops of some friends. In fact, their voltage is also 1.2V, which is current standard voltage. Vee's products are labeled DDR4L. To upgrade these books, you only need to buy current standard voltage memory directly.

The Science of Small Memory

Memory is one of most important components of a computer; it is bridge that communicates with CPU. All programs on a computer run in memory, so memory performance has a big impact on computer. Memory, also known as internal memory and main memory, is used to temporarily store computational data in CPU and exchange data with external storage devices such as hard drives. While computer is running, CPU will transfer data that needs to be calculated to memory for calculation. After calculation is completed, CPU will send result. The performance of memory also determines stable operation of computer. Memory consists of memory chips, printed circuit boards, golden fingers and other parts.